/* Authentication System Styles */

:root {
    --auth-display: flex;
    --desktop-display: none;
}

/* Login Screen Container */
#auth-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    background-size: 200% 200%;
    display: var(--auth-display);
    align-items: center;
    justify-content: center;
    z-index: 99999;
    animation: authFadeIn 0.5s ease-out, gradientShift 15s ease infinite;
    overflow: hidden;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Animated particles background */
#auth-screen::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 0, 0, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 100, 255, 0.25) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(255, 50, 150, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 60% 70%, rgba(168, 85, 247, 0.22) 0%, transparent 50%),
        radial-gradient(circle at 10% 90%, rgba(255, 0, 0, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 90% 10%, rgba(0, 100, 255, 0.15) 0%, transparent 40%);
    animation: particleFloat 20s ease-in-out infinite;
}

@keyframes particleFloat {
    0%, 100% { 
        transform: translate(0, 0) scale(1);
        opacity: 1;
    }
    25% { 
        transform: translate(-20px, -20px) scale(1.1);
        opacity: 0.8;
    }
    50% { 
        transform: translate(10px, 10px) scale(0.9);
        opacity: 1;
    }
    75% { 
        transform: translate(15px, -15px) scale(1.05);
        opacity: 0.9;
    }
}

/* Animated grid overlay */
#auth-screen::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="white" stroke-width="0.5" opacity="0.1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    animation: authBackgroundMove 20s linear infinite;
    pointer-events: none;
}

@keyframes authFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes authFadeOut {
    from {
        opacity: 1;
        transform: scale(1);
    }
    to {
        opacity: 0;
        transform: scale(0.95);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

/* Slide animations for auth screen */
@keyframes authSlideInLeft {
    from {
        transform: translateX(-100%) scale(0.8);
        opacity: 0;
    }
    to {
        transform: translateX(0) scale(1);
        opacity: 1;
    }
}

@keyframes authSlideOutLeft {
    from {
        transform: translateX(0) scale(1);
        opacity: 1;
    }
    to {
        transform: translateX(-100%) scale(0.8);
        opacity: 0;
    }
}

/* Slide animations for desktop */
@keyframes desktopSlideInRight {
    from {
        transform: translateX(100%) scale(0.8);
        opacity: 0;
    }
    to {
        transform: translateX(0) scale(1);
        opacity: 1;
    }
}

@keyframes desktopSlideOutRight {
    from {
        transform: translateX(0) scale(1);
        opacity: 1;
    }
    to {
        transform: translateX(100%) scale(0.8);
        opacity: 0;
    }
}

@keyframes authBackgroundMove {
    0% { background-position: 0 0; }
    100% { background-position: 100px 100px; }
}

/* Login Box */
.auth-container {
    position: relative;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 0 100px rgba(102, 126, 234, 0.2);
    padding: 50px 40px;
    width: 400px;
    max-width: 90%;
    animation: authSlideUp 0.6s ease-out, containerFloat 6s ease-in-out infinite;
    z-index: 2;
    transition: transform 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.auth-container::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, #667eea, #764ba2, #f093fb, #667eea);
    background-size: 300% 300%;
    border-radius: 20px;
    z-index: -1;
    opacity: 0;
    animation: borderGlow 3s ease infinite;
}

.auth-container:hover::before {
    opacity: 0.5;
}

@keyframes containerFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

@keyframes borderGlow {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes authSlideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* OS Logo/Title */
.auth-logo {
    text-align: center;
    margin-bottom: 40px;
}

.auth-logo-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.6);
    animation: authLogoFloat 3s ease-in-out infinite, logoRotate 10s linear infinite, logoPulse 2s ease-in-out infinite;
    position: relative;
    overflow: hidden;
}

.auth-logo-icon::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: logoShine 3s ease-in-out infinite;
}

@keyframes authLogoFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(5deg); }
}

@keyframes logoRotate {
    0% { box-shadow: 0 10px 30px rgba(102, 126, 234, 0.6); }
    25% { box-shadow: 0 10px 30px rgba(118, 75, 162, 0.6); }
    50% { box-shadow: 0 10px 30px rgba(240, 147, 251, 0.6); }
    75% { box-shadow: 0 10px 30px rgba(118, 75, 162, 0.6); }
    100% { box-shadow: 0 10px 30px rgba(102, 126, 234, 0.6); }
}

@keyframes logoPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes logoShine {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.auth-logo h1 {
    margin: 0;
    font-size: 32px;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: textGradientShift 5s ease infinite;
}

@keyframes textGradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.auth-logo p {
    margin: 5px 0 0;
    font-size: 14px;
    color: #666;
    animation: textFadeIn 1s ease-out 0.3s both;
}

        @keyframes textFadeIn {
            from {
                opacity: 0;
                transform: translateY(10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

/* Particle animations */
@keyframes particleFly {
    0% {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
    100% {
        transform: translateY(-40px) scale(0);
        opacity: 0;
    }
}

@keyframes buttonParticleRise {
    0% {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
    100% {
        transform: translateY(-60px) scale(0.2);
        opacity: 0;
    }
}

/* Login Form */
.auth-form {
    margin-top: 30px;
    position: relative;
}.auth-form-group {
    margin-bottom: 25px;
    position: relative;
    animation: formGroupSlideIn 0.5s ease-out both;
    transition: all 0.3s ease;
}

.auth-form-group::before {
    content: '';
    position: absolute;
    top: 0;
    left: -10px;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, #ff0000, #0064ff);
    border-radius: 2px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.auth-form-group:hover::before {
    opacity: 1;
    animation: colorPulse 2s ease infinite;
}

.auth-form-group:nth-child(1) {
    animation-delay: 0.2s;
}

.auth-form-group:nth-child(2) {
    animation-delay: 0.3s;
}

.auth-form .auth-btn {
    animation: formGroupSlideIn 0.5s ease-out 0.4s both;
}

@keyframes formGroupSlideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes colorPulse {
    0%, 100% {
        background: linear-gradient(to bottom, #ff0000, #0064ff);
    }
    50% {
        background: linear-gradient(to bottom, #0064ff, #ff0000);
    }
}

.auth-form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 600;
    color: #333;
    transition: all 0.3s ease;
    position: relative;
    padding-left: 10px;
}

.auth-form-group label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: linear-gradient(to bottom, #667eea, #764ba2);
    border-radius: 2px;
    transition: height 0.3s ease;
}

.auth-form-group:hover label::before,
.auth-form-group:focus-within label::before {
    height: 100%;
}

.auth-form-group:focus-within label {
    color: #667eea;
    transform: translateX(5px);
}

.auth-input-wrapper {
    position: relative;
    overflow: visible;
}

.auth-input-wrapper::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(to right, #ff0000, #0064ff, #ff3296);
    transform: translateX(-50%);
    transition: width 0.4s ease;
}

.auth-input-wrapper:focus-within::after {
    width: 100%;
    animation: progressGlow 1.5s ease infinite;
}

@keyframes progressGlow {
    0%, 100% {
        box-shadow: 0 0 5px #ff0000, 0 0 10px #0064ff;
    }
    50% {
        box-shadow: 0 0 10px #0064ff, 0 0 15px #ff3296;
    }
}

.auth-input-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 18px;
    color: #667eea;
    pointer-events: none;
    transition: all 0.3s ease;
    animation: iconPulse 2s ease-in-out infinite;
}

.auth-form-group:hover .auth-input-icon {
    transform: translateY(-50%) scale(1.2);
    filter: drop-shadow(0 0 5px rgba(102, 126, 234, 0.6));
}

@keyframes iconPulse {
    0%, 100% { 
        opacity: 1;
        filter: drop-shadow(0 0 0px rgba(102, 126, 234, 0));
    }
    50% { 
        opacity: 0.8;
        filter: drop-shadow(0 0 8px rgba(102, 126, 234, 0.4));
    }
}

.auth-form-group input {
    width: 100%;
    padding: 15px 15px 15px 45px;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    font-size: 15px;
    transition: all 0.3s ease;
    background: white;
    box-sizing: border-box;
    position: relative;
}

.auth-form-group input[type="password"] {
    padding-right: 45px;
}

.auth-form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
    animation: inputFocusPulse 0.5s ease-out;
}

@keyframes inputFocusPulse {
    0% {
        transform: scale(0.98);
    }
    50% {
        transform: scale(1.02);
    }
    100% {
        transform: scale(1);
    }
}

.auth-form-group input::placeholder {
    color: #aaa;
}

/* Toggle Password Visibility */
.auth-toggle-password {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    font-size: 18px;
    color: #666;
    padding: 6px;
    transition: all 0.3s ease;
    border-radius: 50%;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    margin: 0;
}

.auth-toggle-password:hover {
    color: #667eea;
    background: rgba(102, 126, 234, 0.1);
    transform: translateY(-50%) scale(1.15);
    box-shadow: 0 0 10px rgba(102, 126, 234, 0.5);
}

.auth-toggle-password:active {
    transform: translateY(-50%) scale(0.95);
}

/* Login Button */
.auth-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-size: 200% 200%;
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    margin-top: 10px;
    position: relative;
    overflow: hidden;
    animation: buttonGradient 3s ease infinite;
}

.auth-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.auth-btn:hover::before {
    width: 300px;
    height: 300px;
}

.auth-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6), 0 0 30px rgba(102, 126, 234, 0.3);
    animation: buttonGradient 1.5s ease infinite;
}

.auth-btn:active {
    transform: translateY(0) scale(0.98);
}

@keyframes buttonGradient {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.auth-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Error Message */
.auth-error {
    background: linear-gradient(135deg, rgba(255, 0, 0, 0.1), rgba(204, 0, 51, 0.15));
    color: #ff3333;
    padding: 12px 15px;
    border-radius: 10px;
    font-size: 14px;
    margin-top: 15px;
    border: 2px solid #ff0000;
    display: none;
    animation: authShake 0.4s ease, errorGlow 1.5s ease infinite;
    box-shadow: 0 0 20px rgba(255, 0, 0, 0.3);
}

.auth-error.show {
    display: block;
}

@keyframes errorGlow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(255, 0, 0, 0.3);
        border-color: #ff0000;
    }
    50% {
        box-shadow: 0 0 30px rgba(255, 0, 0, 0.6);
        border-color: #ff3333;
    }
}

@keyframes authShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

/* Success Message */
.auth-success {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.1), rgba(0, 200, 255, 0.15));
    color: #00ff88;
    padding: 12px 15px;
    border-radius: 10px;
    font-size: 14px;
    margin-top: 15px;
    border: 2px solid #0064ff;
    display: none;
    animation: successGlow 1.5s ease infinite, successSlide 0.5s ease;
    box-shadow: 0 0 20px rgba(0, 100, 255, 0.3);
}

.auth-success.show {
    display: block;
}

@keyframes successGlow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(0, 100, 255, 0.3);
        border-color: #0064ff;
    }
    50% {
        box-shadow: 0 0 30px rgba(0, 255, 136, 0.6);
        border-color: #00ff88;
    }
}

@keyframes successSlide {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Loading State */
.auth-loading {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-right-color: white;
    border-radius: 50%;
    animation: authSpin 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
    margin-right: 8px;
    vertical-align: middle;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

@keyframes authSpin {
    0% { 
        transform: rotate(0deg) scale(1);
    }
    50% { 
        transform: rotate(180deg) scale(1.1);
    }
    100% { 
        transform: rotate(360deg) scale(1);
    }
}

/* Remember Me */
.auth-remember {
    display: flex;
    align-items: center;
    margin-top: 15px;
}

.auth-remember input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-right: 8px;
    cursor: pointer;
}

.auth-remember label {
    font-size: 14px;
    color: #666;
    cursor: pointer;
    user-select: none;
}

/* Footer Info */
.auth-footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
    font-size: 13px;
    color: #999;
    animation: footerFadeIn 1s ease-out 0.8s both;
}

.auth-footer p {
    margin: 5px 0;
    transition: all 0.3s ease;
}

.auth-footer p:hover {
    color: #667eea;
    transform: scale(1.05);
}

.auth-footer strong {
    color: #667eea;
    font-weight: 700;
    padding: 2px 6px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.auth-footer strong:hover {
    background: rgba(102, 126, 234, 0.2);
    transform: scale(1.1);
    display: inline-block;
}

@keyframes footerFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hidden class for showing/hiding desktop */
.hidden {
    display: none !important;
}

/* Logout confirmation */
.auth-logout-confirm {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    z-index: 100000;
    text-align: center;
    max-width: 400px;
}

.auth-logout-confirm h3 {
    margin: 0 0 15px 0;
    color: #333;
}

.auth-logout-confirm p {
    margin: 0 0 25px 0;
    color: #666;
}

.auth-logout-confirm button {
    padding: 10px 25px;
    margin: 0 5px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.auth-logout-confirm .confirm-yes {
    background: #667eea;
    color: white;
}

.auth-logout-confirm .confirm-yes:hover {
    background: #5568d3;
}

.auth-logout-confirm .confirm-no {
    background: #e0e0e0;
    color: #333;
}

.auth-logout-confirm .confirm-no:hover {
    background: #d0d0d0;
}

/* Responsive Design */
@media (max-width: 480px) {
    .auth-container {
        padding: 40px 30px;
    }
    
    .auth-logo h1 {
        font-size: 28px;
    }
    
    .auth-logo-icon {
        width: 60px;
        height: 60px;
        font-size: 30px;
    }
}